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httpcore2 vulnerabilities

Vulnerabilities published for httpcore2 in the last 30 days: 0. Listed in the KEV catalogue: 0.

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Vulnerability: 1

  1. CVE-2026-84381

    High · CVSS 8.1EPSS 0.11%Fix available

    HTTPX2: Secure WebSocket traffic sent without TLS through SOCKS proxies

    HTTPX2 is a next generation HTTP client for Python. Prior to 2.10.0, httpcore2 fails to start TLS in src/httpcore2/httpcore2/_sync/socks_proxy.py and src/httpcore2/httpcore2/_async/socks_proxy.py when the remote origin uses wss through a SOCKS5 proxy because the TLS upgrade condition only recognizes https. HTTPX2 exposes the flaw through Client.websocket() and AsyncClient.websocket() from 2.6.0 through 2.9.1, so the opening handshake, query parameters, Authorization headers, cookies, and subsequent frames can cross the proxy path in plaintext without certificate verification. An attacker controlling or observing that path can read or modify t

    httpcore2Python
    • Update to 2.10.0
    Published Updated
    Source advisory 1 ↗Source advisory 2 ↗Source advisory 3 ↗

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